229807921 has 8 divisors (see below), whose sum is σ = 278087040. Its totient is φ = 185391168.

The previous prime is 229807913. The next prime is 229807951. The reversal of 229807921 is 129708922.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 229807921 - 2³ = 229807913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (229807951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 965461 + ... + 965698.

It is an arithmetic number, because the mean of its divisors is an integer number (34760880).

Almost surely, 2^229807921 is an apocalyptic number.

It is an amenable number.

229807921 is a deficient number, since it is larger than the sum of its proper divisors (48279119).

229807921 is a wasteful number, since it uses less digits than its factorization.

229807921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931183.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 229807921 is about 15159.4169083115. The cubic root of 229807921 is about 612.5219615060.

The spelling of 229807921 in words is "two hundred twenty-nine million, eight hundred seven thousand, nine hundred twenty-one".